k3-ve2 on terios J102 details


Hello everybody
I read on this site that its possible to swap terios k3-ve with sirion rally k3-ve2
since that time is their anyone did it Unknw because I have some questions

1- will I need only the engine and ecu ?? or I will need extra parts like wiring or other parts ??
2- how was the outcome Unknw extra power Unknw less fuel consumption Unknw
3- how can I know that this is k3-ve2 not k3-ve any special marks Unknw
4- I saw 2 different sirion engines the first is 76 kw and the other is 81 kw how can I recognize each Unknw

I will really appreciate any help specially if someone gives me swapping details